Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Derivative Assets (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2024	Dec. 31, 2023	Sep. 18, 2023
Derivative [Line Items]
Total current derivative assets	$ 11,133	$ 0
Total noncurrent derivative assets	19,246	3,531	$ 3,200
Primrose Bio
Derivative [Line Items]
Total noncurrent derivative assets	2,921	3,531
Equity Option \| Agenus, Inc.
Derivative [Line Items]
Total current derivative assets	3,815	0
Total noncurrent derivative assets	$ 2,226	0
Derivative, term of contract (in years)	5 years
Collars \| Viking
Derivative [Line Items]
Total current derivative assets	$ 7,318	0
Partner Programs \| Agenus, Inc.
Derivative [Line Items]
Total noncurrent derivative assets	$ 14,099	$ 0

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483466/210-20-50-3

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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+ References

No definition available.

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